1031130322320 has 160 divisors (see below), whose sum is σ = 3654594662400. Its totient is φ = 235593561600.

The previous prime is 1031130322303. The next prime is 1031130322349. The reversal of 1031130322320 is 232230311301.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4165381 + ... + 4405979.

It is an arithmetic number, because the mean of its divisors is an integer number (22841216640).

Almost surely, 2^{1031130322320} is an apocalyptic number.

1031130322320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1031130322320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1827297331200).

1031130322320 is an abundant number, since it is smaller than the sum of its proper divisors (2623464340080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1031130322320 is a wasteful number, since it uses less digits than its factorization.

1031130322320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243173 (or 243167 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1031130322320 its reverse (232230311301), we get a palindrome (1263360633621).

The spelling of 1031130322320 in words is "one trillion, thirty-one billion, one hundred thirty million, three hundred twenty-two thousand, three hundred twenty".